It's dusk as I get to the site, and quickly it's too dark to see a darn thing. I'm just putting the clods of dirt in my bag as I go. Some are obvious pulltabs and screwcaps. One looked (and sounded) like a silver ring (no such luck). Thirty minutes and I managed to cover the site well enough that I was satisfied. Pleased to find when I got home I had a 1927 Mercury dime, a corroded 50s era Wheat cent and a few pieces of clad in with the trash.